Home / 695,602.40-1,042,021.20-399,768.80

Finding the Fourth Proportional to 695,602.40, 1,042,021.20 and 399,768.80

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Solution

The fourth proportional to 695,602.40, 1,042,021.20 and 399,768.80 is: 598,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,602.40 : 1,042,021.20 = 399,768.80 : x
  2. Step 2: Convert to fraction form
    695,602.40/1,042,021.20 = 399,768.80/x
  3. Step 3: Cross multiply
    695,602.40x = 1,042,021.20 × 399,768.80
  4. Step 4: Simplify right side
    695,602.40x = 416,567,564,698.56
  5. Step 5: Solve for x
    x = 416,567,564,698.56/695,602.40
  6. Step 6: Final answer
    x = 598,858.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.